
<style>
#MyButton::part(control) { background: padding-box linear-gradient(#ff0000, #ff0000), border-box #ff0000; color: #00ff00; }
#MyButton::part(control):hover { opacity: 0.8; }

</style>
<fluent-button type="button" id="xxx" appearance="neutral" blazor:onclick="1" b-x1200685t0="" blazor:elementreference="xxx">My button</fluent-button>
